Generation has thrown an exception: but there is no exception and it wont generate the rig correctly. how do I fix this?
You can try to clean the file you're working on, going in the outliner, changing it from &quot;view layer&quot; to &quot;orphan data&quot; and click the &quot;purge&quot; button many times, until only brushes remain, then generate.
Try also the advanced options, choosing to generate a new rig with a new rig name, instead of overwriting the previous rig.
Try also to append the metarig into a new file and generate from there.
If the problem persist, please upload your file.